Get Advice on Live Video Call
Earn $ Cash $ with
consultations on Bissoy App

Which carrier frequency is used in audio modulation in an FM transmitter for the purpose of audio signal transmission?

Correct Answer: 5.5 MHz
An FM transmitter is used for the purpose of audio signal transmission. The carrier frequency used in audio modulation is 5.5 MHz above that which is used in video modulation. Both sound and picture signals are transmitted by the same antenna by using a diplexer called picture (sound diplexer or combining network).

A GSM cellular telephone standard requires a minimum of 9 dB rejection of interfering signal levels of -23 dBm at 3 MHz from the carrier, -33 dBm at 1.6 MHz from the carrier, and -43 dBm at 0.6 MHz from the carrier, for a carrier level of -99 dBm. Determine the required local oscillator phase noise at 3 MHz carrier frequency offset.

An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are

In frequency modulation, the amplitude of modulated carrier signal is ______and its frequency is ______ by the modulating message signal.

Calculate the transmitter output frequency if the transmitter uses a crystal oscillator with a frequency of 14.9 MHz and a frequency multiplier chain with factors of 2, 3, and 3.

The ratio between transmitter chip clock rate and the difference between the transmitter chip clock and difference between transmitter and receiver chip clock rates is called ___________

In which modulation, frequency of carrier signal is varied with the amplitude of modulating signal?

Modulation is a process of the superposing high-frequency audio signal on low-frequency radiowaves.

If a FM signal having modulation index mf is passed through a frequency tripler, then the modulation index of output of frequency tripler is ________

In frequency modulation, carrier frequency is always greater than baseband frequency.

What is the maximum carrier frequency to be used if the upper limit frequency that is available is 4000Hz and the frequency of the modulating signal is 100Hz?